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Individual
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Individual
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Priority to ES122964UpriorityCriticalpatent/ES122964Y/es
Publication of ES122964UpublicationCriticalpatent/ES122964U/es
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Publication of ES122964YpublicationCriticalpatent/ES122964Y/es
Un sobre perfeccionado caracterizado esencialmente por el hecho de comprender en uno de sus bordes de embocadura una solapa parcial de cierre presentando el resto del borde y el borde opuesto en posición enfrentada sendas escotaduras operativamente dispuestas para permitir la entrada de un medio abridor a situar bajo la solapa de cierre y ejercer tracción de la misma hacia afuera liberando el cierre.
ES122964U1966-06-171966-06-17Un sobre perfeccionado.
ExpiredES122964Y
(es)